Ventilator



Patented Mar. 16, 1926.

uul'rsn erases LIONEL VALLAS, OF CHICAGO, ILLINOIS.

VENTILATOR,

Application filed June 21, 1923. Serial No. 646,738.

To all whom it may concern Be it known that I, LIoNnL VALLAs, a citizen of the United States, and 'a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ventilators, of which the following is a description, reference being had to the accompanying drawing, which forms a part of my specification. My invention relates to a ventilator of the type more especially intended for use on the roofs of buildings, whereby the vitiated or foul air of the building interior will be automatically exhausted therefrom through the action of the outer air currents.

The invention has for its object the provision of a ventilator of the charactcrreferred to, which will provide a true siphon orexhausting action by means of the passing or moving outer air currents without the use of other means; a ventilator having no movable parts and wherein down drafts or currents will be prevented, while at the same time a storm-proof ventilatorprovided and rain and snow prevented from entering the exhausting or eduction portion thereof. a The objects and advantages of my invention will be more readily comprehended from the detailed description of the accompanying drawing, wherein I I Figure 1 isa perspective view of my improved ventilator looking downwardly. Figure 2 is a vertical sectional view there- Figure 3. is a bottom plan view.

Inthe particular exemplification of the invention as disclosed in the drawing, it comprises the main conduit or exhausting portion indicated 10, preferably cylindrical and of any-desired height .and cross sectional dimensions. The conduit is adapted to be suitably secured about the flue or opening through the roof of a building communicating with the interior of the building in order that'the conduit may act as an eduction member for the outward passage of the vitiated or foul air from the build ing interior. The eduction conduit is preferably of similar dimensions throughout.

The exterlor side of the eduction conduit 10 is provided with a plurality of air directing members 11, arranged at equi-distancesapart and preferably at diametrically opposite points as more clearly shown in Figure 3. These air directing members 11 each consist preferably of a single sheet of suitable metal bent into the arcuate form shown in Figure 8, and preferably sheared so as to have the sides of the members slope downwardly toward the conduit 10 below the intermediate portions at the bottoms of the members 11, as shown at 12 in Figure 2.- The sides of the members 11 are-secured to 'the eduction conduit 10 in any suitable manner, as by rlvets or otherwise, as shown at 13. The upper ends of the members 11'are preferably arranged in the same horizontal mensions throughout from top to bottom so as toprovide the same area at the tops or discharging ends of the siphon members 11 as at the bottom or intake ends thereof. With this construction, no obstruction or restric' tion is provided to offer resistance to light or delicate exterior air currents in theirupward passage througlrthe siphon inducing members 11. 1 V

The siphon inducing members 11 are in turn surrounded by an annular member or band 14L which is preferably of the same width as the width of the intermediate portions of the siphon inducing members 11.

,The circumferential band 14L is secured in any suitable manner to the siphon induclng .members. 11, as for example by r1vets, and

not only reenforces the siphon members 11, but at the same tnne provides auxiliary siphon passages intermediate of members '11, as shown at the points 15; The top of the band or member 1 1 is preferably arranged flush with the tops of the siphon 'members 11 and the top of the eduction con- 'members 11 and the band 1 1- to a predetermined eXtent as shown in Figure 2. The intermediate vertically disposed portions of the brackets 16 provide support for a second circumferential band 17 which is preferably arranged so as to have the lower perimeter or edge of the band extend into a horizontal plane slightly beneath the plane as the top of the eduction conduit 10 and thesemembers 11 are of the same diplane of the top of the band 14:; while the upper perimeter or edge of the band 17 is intended to preferably extend slightly betions of the brackets 16.

These brackets 16 have their upper portions disposed inwardly, with the immediate ends arranged in an upward inclining manner as shown at 18 in Figure 2, to receive a top or hood member 19, which is preferably dished or cone-shaped as shown an Figures :1 and :2, to fprovide a proper moisture or water-shed. The diameter at the base of :the top or hood portion 19 is less than the diameter of top band 17 and preferably suhstantially equal to the di .ameter of the band member 14, so that the hood or :top 19 will be disposed across the tops of the siphon members 11 as well as the siphon :passages 15 formed intermediate of the respective siphon members 11 and the band 14.

With the top band 17 arranged to eX- tend slightly above the vertically disposed 'portionof the brackets 16, it is-appa rent that the upper {perimeter of the band ,17 is arranged ,;in a horizontal plane somewhat above the plane of the'perimeter of the top or hood 19; while at the same time a circumferential space between band 17 and the perimeter of hood 19 .is provided, as more clearly shown in Figures 1 and 2.

The ventilator is preferably made of weather-resisting material, such as copper orgalvanized metal, with the edges of the respective portions or members preferably beaded or crimped so as to reeu-foree the same; and the eduction member 10 is also preferably provided with -a damper as at '20 pivoted in any suitable manner at '21, and preferably provided with a weight as at 22 which automatically causes the damper to swing into open position.

With my improved construction wherein the siphon tubes or members 11 are-encircled by the circumferential vmember or band 1 1, a plurality of siphon chambers disposed entirely about the exhausting 'or eduction conduit 10 are provided and free and ample suction through the siphon .tubes or passages is provided as the siphon passages are of equal dimensions' throughout from top to bottom thus offering no restriction to the air currents; the siphon passa 'es inducing an exhausting action at the top between the cap and the outer band or member '17; the latter preventing any down draughts through the ventilator as well as providing yond the tons of the vertically disposed porchannels arranged circumferentially about the eduction member, each of said channels being of equal transverse dimensions throughout and terminating flush with the upper end of the educt ion'member, bracket members secured to the side walls of the channels, bent laterally outward across the upper ends of the channel side walls, thence upwardly and then inwardly,a hood me1n bersecured to the upper inner ends of the bracket members in spaced relation with the upper ends of theeduction member and said channels, a band secured to the upwardly bent portion of the brackets and arranged to extend beyond the tops of the siphon inducing channels and the lower perimeter of the hood member and in spaced relation therewith.

I 2. A ventilator of the character described, comprising a central conduit, a plurality of arcuate siphon inducing members, disposed about the conduit and of equal transverse dimension throughout and terminating with the top of the conduit,-a band disposed about the members, with its upper edge in the same plane as the upper ends of said members and the conduit, whereby auxiliary siphon channels are provided, bracket members secured to the arcuate members and disposed outwardly and upwardly, a conical hood member-secured to the upper ends of the bracketmembers in spaced relation with the tops of the conduit and siphon members and of transverse dimensions equal to the transverse dimensions. of the conduit and surrounding siphon chambers, and an encircling band secured to the outwardly disyposedportions of the bracket members in spaced relation with the hood and the siphon members and of width greater than the'space intermediate of the upper ends of the'siphon members, conduit and the hood member.

LIONEL Vi-XLLAS. 

